Low-Energy QCD: Chiral Coefficients, UA(1)-Breaking and the Quark-Quark Interaction
arXiv:hep-ph/9606430
Abstract
A detailed investigation of the low-energy chiral expansion is presented within a model truncation of QCD. The model dependence of the chiral coefficients is tested for several forms of the quark-quark interaction by varying the form of the running coupling in the infrared region. Furthermore we demonstrate how the UA(1)$ anomaly and a mass for the eta' can arise in this approach.
Contributed Paper at PANIC 96, 2 pages, LATEX, uses sprocl.sty and axodraw.sty